AHZNB's ShinobiCraft

Players start by crafting a kunai and a shuriken, then gain ninja experience by striking hostile mobs with bare hands and taking damage in return. Two ninja experience convert to one chakra, with caps of 100,000 ninja experience and 50,000 chakra. Reaching 300 ninja experience grants ten vanilla levels and a chance at a nature release, and a ninjutsu release carries a 30% chance of the medical ninja path.

The mod adds over 100 custom jutsu and more than 30 cosmetics, along with NPCs, puppets, summons and a mission system meant to make grinding less tedious. Clan jutsu and kekkei genkai are included, and after 300 ninja experience each player has a 0.1% chance to obtain a random kekkei genkai, with a further one granted at the next point. Dojutsu are a separate branch that cannot be reached through normal kekkei genkai eyes.

The Sharingan evolves into the Mangekyo Sharingan, and a Team Scroll lets another player join a team by right-clicking it. Teammates dying within 10 blocks of each other can trigger a Mangekyo Sharingan, and the Mangekyo helmet gives around 50 armor. Eternal Mangekyo Sharingan requires a medical scroll and combining with another player's Mangekyo. The mod runs on client and server and is published for Forge 1.12.2 only. Its license is All rights reserved, so it is not open source.